Mid-Ocean Ridge: The undersea mountain chian where new ocean floor is produced;a divergent plate boundary. Sonar: A system that determines the distance of an object under water by recording echoes of sound waves; get its name sound waves navigation and ranging. Sea-Floor Spreading: The process by which molten material adds new oceanic crust to the ocean floor. Deep- Ocean Trenches: A deep valley along the ocean floor through which oceanic crust slowly sinks towards the mantle. Subduction: The process by which oceanic crust sinks beneath a deep-ocean trench and back into the mantle at a convergent plate boundary.
Outline
Mapping the Mid-Ocean Ridge
The East Pacific rise is a part of the mid-ocean ridge
Table of Contents
1.4 Sea-Floor Spreading
Vocabulary
Mid-Ocean Ridge: The undersea mountain chian where new ocean floor is produced;a divergent plate boundary.Sonar: A system that determines the distance of an object under water by recording echoes of sound waves; get its name sound waves navigation and ranging.
Sea-Floor Spreading: The process by which molten material adds new oceanic crust to the ocean floor.
Deep- Ocean Trenches: A deep valley along the ocean floor through which oceanic crust slowly sinks towards the mantle.
Subduction: The process by which oceanic crust sinks beneath a deep-ocean trench and back into the mantle at a convergent plate boundary.
Outline
Mapping the Mid-Ocean Ridge
Evidence For Sea-Floor Spreading
Subduction at deep-ocean trenches